Here is my first test shot (I have had this lens for several years now and have used it on Nikon cams) with my Wild Heerbrugg 9.8cm f/1 lens on the NEX-7. I have not yet put this in a secure mount for the NEX. So, very fast shutter speed was essential.

At the moment it is in a M42 mount conveniently. However this is going to be changed drastically so that it would be in Alpha mount (with infinity focus), tripod collar and a filter thread mount (would come to ~82mm) to attach a proper hood.

No, I have not (nor have I seen any images of it anywhere). It is a medium format lens (coverage >80mm!) made for aerial reconnaissance missions/cameras. No idea how many were made and actually survive.

There are some visible samples of another lens- the Wild Heerbrugg Falconar 9.8cm f/1.4 around though. The Reconar is two stops faster!